Question

estimate the following by rounding nearest hundreds
$546 \times 79$
$8645 + 3158$
​

Answer 1

Step-by-step explanation:

600 x 100 = 60000

8600 + 3200 = 11800

Answer 2

$\sf\huge\bold{Answer:}$

$\fbox{Solution:1}$

• $546 \times 79$

$\tt =\:43134$

Rounding off to nearest hundred

$\tt\red{=\:43100}$

$\fbox{Solution:2}$

• $8645 + 3158$

$\tt =\:11803$

Rounding off to nearest hundred

$\tt\red{ =\:11800}$

Explanation :

• When Rounding off to nearest hundred we must follow steps given below :

1. First of all, rounding off to nearest hundred indicates hundred, this means the number must have two zeroes [00].
2. The next step is to check whether the number is close to succeeding 100 or precedding 100.
3. If the number is near to precedding 100 , the number will remain same but if it is near to succeeding one , then we will add 1 to the number in front of zeroes.
4. Let us take example :-

• In number 34589, 589 is near to 600 i.e succeeding 100 thus, we will add 1 to 5 and replace 89 with two zeroes 00. 34589→34600
• In number 34529, 529 is near to 500 i.e succeeding 100 thus, we will keep it same and replace 89 with two zeroes 00. 34529→34500.(here, 50 will be included) » 34550→34500.